The waterproof layer of the lap joint should stick (welding) firm, tight sealing, no distortion, fold, curling and blister defects.
卷材屋顶防水层的搭接缝应粘(焊)结牢固，密封精密，不得有扭曲、皱折、翘边和起泡等缺陷。
2
All these and other developments show that welding is no longer what it was in time past, the simple matter of running a bead with a gas flame or a stick electrode.
所有这些和其他的新技术都显示焊接不再是过去那样，只用气体火焰或一根焊条焊一道焊缝的简单问题了。
3
Capabilities include stick, basic TIG, MIG and flux-core welding.